To combine (figures) to form a sum.
To combine numbers into a sum
To join so as to increase
To make a further remark
Once we have a sheriff's salary coming in, maybe we can add a little to their budget—until they get settled.
You couldn't add wood to the fire?
I was so tired last night I didn't even wake up to add wood.
It doesn't add up.
I saw your add in the paper.